Hi All,
I recommend PBX Plus (
www.pbxplus.com) which is offering Virtual/Hosted PBX Services in an affordable price with so many advanced features like call forwarding, free speech recognition, voicemail and voicemail transcription, eFAX, unlimited extensions and sub-extensions etc. They offers coverage in 40 countries.
The drag and drop designer can be used to configure PBX in just 10 to 15 minutes. For a limited period they are offering a free US or UK number with unlimited minutes to your account.
I suggest you to sign-up and review the site for more features and build your phone system with unlimited trail and testing.
Pbx Plus is really awesome.